On my 2006 that seal has seeped since it ran out of warranty. I replaced it when I did the TC pump rub fix proactively. That new seal began to seep in about a year. The fluid when full will be high enough to sit against that seal when the truck is sitting level. When about a 1/2 pint low it won't.

My 1990 K1500 seal always seeped from new. Dealer replaced it 4 times and me 2 or 3. It never stayed dry.

I've learned to check the TC level often and when the seep becomes a leak creating persistent drops, I replace. But I gave up expecting a 100% seal.

And yes, the seep is where the seal (rubber and spring) meets the yoke.

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*2006 2500HD SLT, LBZ, 4x4, Auto, ex. cab, 8' bed.

Democrats: abolish ICE... free health care for illegals... make it easy for illegals who cross to stay... give illegals the right to vote... adamantly oppose building a secure border... create "sanctuary cities"... grant illegals in the country amnesty... welfare for illegals... tip off illegals about ICE raids. And we're supposed to believe that Democrats aren't for open borders simply because they say so?